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K+S Group
K+S Entsorgung GmbH
Good disposal concepts in terms of sustainability must
have long-term practicality, as well as being lastingly
safe and economically viable.
The safest form of disposal is to collect the harmful
substances separately in the most concentrated form
possible and to remove them for good from the
biosphere.
Underground Waste Disposal
K+S Group
K+S Entsorgung GmbHThe K+S Group | Facts and figures
Sites in 22 countries
A world wide leader in the sectors of:
• Special and standard fertilisers
• Plant care products
• Salt products
• More than 13,000 employees
• Revenue 2008: 4.79 billion €
• Since september 2008 one of 30 DAX-listed
companies, Germany‘s most important stock
exchange index
K+S Group
K+S Entsorgung GmbHDie K+S Gruppe | Business units
K+S Group
Fertilisers and plant careK+S KALI GmbH, COMPO GmbH & Co. KG,
fertiva GmbH
Saltesco – european salt company GmbH &
Co. KG, SPL - Sociedad Punta de Lobos S. A.
Waste Management and
recyclingK+S Entsorgung GmbH
Logistics KTG - Kali-Transport Gesellschaft mbH
IT-Services K+S IT- Services GmbH
Consulting K+S Consulting GmbH
Trading business CFK - Chemische Fabrik Kalk GmbH
K+S Group
K+S Entsorgung GmbHDie K+S Gruppe | Business units
K+S Group
Fertilisers and plant careK+S KALI GmbH, COMPO GmbH & Co. KG,
fertiva GmbH
Saltesco – european salt company GmbH &
Co. KG, SPL - Sociedad Punta de Lobos S. A.
Waste management and
recyclingK+S Entsorgung GmbH
Logistics KTG - Kali-Transport Gesellschaft mbH
IT-Services K+S IT- Services GmbH
Consulting K+S Consulting GmbH
Trading business CFK - Chemische Fabrik Kalk GmbH
K+S Group
K+S Entsorgung GmbHK+S Entsorgung | Profile
• A K+S Group business segment since 1991
• Disposal activities are centrally steered from
Kassel
• Reutilisation, disposal and recycling at
company-owned facilities
• Largest number of sites and technologies on the
market
• Internationally active, with representatives in
eight countries
• Pioner of underground waste disposal with
first facility woldwide: Herfa-Neurode (1972)
• Revenue 2008: 71.1 m. €Europe´s leading company
in the field of underground
waste disposal
K+S Group
K+S Entsorgung GmbHK+S Entsorgung | Solutions
Underground disposal:
• Safest solution for the disposal of hazardous
waste
• The permanent and sustainable exclusion of the
contaminants from the biosphere
• Mantainance free
Underground disposal plants (UTD):
• Herfa-Neurode
(technical capacity: 200,000 metric t / year)
• Zielitz
(technical capacity: 40,000 metric t / year)Long-term-safe disposal
solution
K+S Group
K+S Entsorgung GmbHDisposal facilities | Germany
1 Underground Waste Disposal Plant Zielitz
2 Underground Waste Disposal Plant
Herfa-Neurode
K+S Group
K+S Entsorgung GmbH
Formation of the salt layers 250 million years ago
Evaporation caused by solar heat
Barrier
Salt deposit
Potash deposit
Semi-enclosed sea
Salted sea water
Werk Werra | Formation of the salt and potash deposits
K+S Group
K+S Entsorgung GmbHWerk Werra | Potash mining
Two potash deposits | Mining with room-and-pillar-system
K+S Group
K+S Entsorgung GmbHWerk Werra | Potash mining
Mining with
room-and-pillar-system
100 m
2. potash layer
60-70 m
1. potash layer
K+S Group
K+S Entsorgung GmbHUTD Herfa-Neurode | Prerequisites
The safest solution for the
disposal of hazardous
waste
Prerequisites for underground waste disposal
• Waste storage only in disused, excavated areas of the mine
• Storage area has to be remote from extraction area with possiblity to be sealed off from it
• Cavities remain open and have no backfill obligation
• Cavities have to be stable and must remain accessible even after prolongend time
• Mine has to be dry and free of water
• Storage areas have to be sealed off from water-bearing layers
K+S Group
K+S Entsorgung GmbHUnderground Disposal | Specific safety assessment
Technical
planning
Waste data
Hydro-
geological data
Geological
data
Environ-mental
impact
assessment
Safety concept
Risk assessment
of the operational
phase
Safety of:
operation
stability of
cavities
Geotechnical risk
assessment
Long-term-safety
evidence
Assessment of:
natural and
technical
barriers
incidents and
contingencies
the overall
system
K+S Group
K+S Entsorgung GmbHUTD Herfa-Neurode | Storage Conditions
Not acceptable for underground disposal are wastes that are:
• explosive
• self inflammable
• spontaneous combustile
• infectious
• radioactive
• releasing hazardous gases
• liquid
• increasing their volume
K+S Group
K+S Entsorgung GmbHUTD Herfa-Neurode | Material groups
Structure and
documentation
Wastes are separated by 17 material groups:
• Alkaline wastes
• Alkaline wastes, moisture sensitive
• Acid wastes
• Acid wastes, moisture sensitive
• Cyanides (acid / alkaline)
• Mercury (acid / alkaline)
• Organic wastes (acid / alkaline)
• Hydroxide sludges
• Capacitors
• Transformers (Cu / Fe)
• Parts of transformers (Cu / Fe)
• Other wastes
K+S Group
K+S Entsorgung GmbHUTD Herfa-Neurode | A unique disposal plant
Shaft at Werk Werra
• First underground waste disposal plant
worldwide
• Complex safety installations
• Complex documentation to allow precise
backtracking
• Retain samples of every single waste delivery
• Retrievability of wastes for recovery of resources
• High capacities and flexibility
• Infrastructure of a major company
K+S Group
K+S Entsorgung GmbHUTD Herfa-Neurode | Multi-barrier-system
Natural barriers
• Salt (gastight) 300 m
• Clay (watertight) 100 m
• Bunter stone 500 m
Artificial barriers
• Packaging
• Brick walls & Field dams
• Waste repository zone dams (all accesses are
barred my massive dams)
• Long-term-safe shaft backfilling (watertight)
No other post closure maintenance, wastes
are irrevocably removed from the
biosphere
Long-term-safe and
maintenance-free